We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
29 May-11:20:46 Re: collection of manuel mesa (Manuel Mesa)
29 May-11:04:12 Re: twenty basic minerals (Riccardo Modanesi)
29 May-08:47:20 Re: twenty basic minerals (Peter Lemkin)
29 May-08:09:10 Re: collection of heimo hellwig (Heimo Hellwig)
29 May-08:08:54 Re: twenty basic minerals (Tom Mazanec)
29 May-06:01:17 Re: cornish chalcocite but from where? (Markbeckett)
28 May-23:57:45 The mizunaka collection - calcite (Am Mizunaka)
28 May-23:49:10 Re: twenty basic minerals (Steveb)
28 May-16:54:20 Re: a mineralogical trip through the regions of the uk - england / cumbria (Jordi Fabre)
28 May-16:20:45 Re: a mineralogical trip through the regions of the uk - england / cumbria (Colin Robinson)
28 May-14:29:16 Re: collection of tobi (Pierre Joubert)
28 May-14:20:11 Re: cornish chalcocite but from where? (Gneissware)
28 May-13:16:23 Re: a mineralogical trip through the regions of the uk - england / cumbria (Jordi Fabre)
28 May-10:28:46 Re: twenty basic minerals (Gneissware)
28 May-10:09:14 Re: collection of tobi (Gneissware)
28 May-07:56:16 Re: twenty basic minerals (Bob Harman)
28 May-07:50:32 Re: twenty basic minerals (Peter Lemkin)
28 May-07:35:44 Twenty basic minerals (Tom Mazanec)
28 May-07:28:25 Re: collection of tobi (Tobi)
28 May-07:25:44 Re: cornish chalcocite but from where? (Tobi)
28 May-07:14:15 Re: calcite location (Tobi)
28 May-06:58:47 Re: calcite location (Vitomorim)
28 May-06:23:13 Re: cornish chalcocite but from where? (Jfc035)
28 May-06:20:32 Cornish chalcocite but from where? (Jfc035)
28 May-01:15:15 Re: collection of tobi (Philippe Durand)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
28229


The time now is May 29, 2017 12:07

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Don Lum Collection
  Goto page Previous  1, 2, 3 ... 50, 51, 52
  Index -> Collection photos and Collector's page
Like
1090


View previous topic :: View next topic  
Author Message

Don Lum




Joined: 03 Sep 2012
Posts: 1717
Location: Arkansas


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 18, 2017 23:17    Post subject: Re: Don Lum Collection  

Quartz cabochon with copper sulfate liquid inclusions and bubbles


P5180872.JPG
 Mineral: Quartz
 Locality:
Bahia, Brazil
 Dimensions: 22mm x 19.5mm x 8.8mm
 Description:
Polished Quartz cabochon with copper sulfate liquid inclusions and bubbles
 Viewed:  281 Time(s)

P5180872.JPG



_________________
hogwild
Back to top
Reply to topic Reply with quote
Like
4
   

Don Lum




Joined: 03 Sep 2012
Posts: 1717
Location: Arkansas


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 19, 2017 17:12    Post subject: Re: Don Lum Collection  

I don't have a subscription to Gems and Gemology but here is a reference from a contributor from Barcelona to gemologyonline.com https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=20&t=20987 and I quote:

Elena Andia
Post subject: Blue fluid inclusions in quartzPostPosted: Wed Mar 04, 2015 5:23 pm
Offline
Established Member
User avatar

Joined: Fri Feb 20, 2015 6:00 pm
Posts: 15
Location: Barcelona (Spain)
Hi to everybody!

During our last trip to Brazil, we bought some colorless stones with blue fluid inclusions. Few days ago we analyzed one of the stones. With the distant vision method it could be observed a refractive index of 1.55 approximately. With the microscope it can be seen typical inclusions from natural gemstones (crystal inclusions, two-phase inclusions, etc.) and two blue fluid inclusions. Under long wave UV radiation this specimen displayed a bluish green fluorescence.

We were investigating and we found an issue of Gems & Gemology that talks about quartz with blue fluid inclusions (probably a saturated copper sulfate solution). Here you have the reference:

John I. Koivula, "Colored fluid inclusions in quartz", Gems and Gemology, Volume 42, Spring 2006, pages 71-72.

We think it is a very curious gemstone and we hope you like it.

What do you think about it?

End quote.

Cheers,

Don

_________________
hogwild
Back to top
Reply to topic Reply with quote
Like
   

Tobi




Joined: 07 Apr 2009
Posts: 2387
Location: Good Old Germany


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 20, 2017 04:20    Post subject: Re: Don Lum Collection  

Don Lum wrote:
Polished Quartz cabochon with copper sulfate liquid inclusions and bubbles
I really struggle to like a polished rock, but that one is quite interesting :-)
Back to top
Reply to topic Reply with quote
Like
   

Don Lum




Joined: 03 Sep 2012
Posts: 1717
Location: Arkansas


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: May 20, 2017 08:56    Post subject: Re: Don Lum Collection  

Tobi wrote:
Don Lum wrote:
Polished Quartz cabochon with copper sulfate liquid inclusions and bubbles
I really struggle to like a polished rock, but that one is quite interesting :-)


Tobi, thank you for your tolerance and understanding. I considered your feelings as well as those of Jordi and Carles before posting but decided that the larger FMF community would appreciate such a picture since it was alluded to in Roger's post and Cascaillou's comment.

Regards,

Don

_________________
hogwild
Back to top
Reply to topic Reply with quote
Like
1
   
Display posts from previous:   
   Index -> Collection photos and Collector's page   All times are GMT - 5 Hours
Page 52 of 52
  Goto page Previous  1, 2, 3 ... 50, 51, 52  

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2017


Powered by FMF